(a) Except as otherwise provided in subsection (b) of this section, a person that for valuable consideration, knowingly purchases or sells a part for transplantation, therapy, research, or education if removal of a part from an individual is intended to occur after the individual's death commits a Class IIIA felony.

(b) A person may charge a reasonable amount for the removal, processing, preservation, quality control, storage, transportation, implantation, or disposal of a part.